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183 articles concerning extended query  found, showing 1 to 10

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* A model study on the possible effects of an external electrical field on enzymes having dinuclear iron cluster [2Fe-2S]. med./biol.
Turker L (2012), ScientificWorldJournal 2012: 985958
Exposure: electric field

DETAILS * Effect of alternating magnetic field treatments on enzymatic parameters of cellulase. med./biol.
Zhang J, Wang S, Xu B, Gao M (2012), J Sci Food Agric 92 (7): 1384 - 1388
Aim: To evaluate the enzymatic parameters of cellulase exposed to an alternating magnetic field.
Endpoints: enzyme activity of cellulase
System: isolated bio./chem. substance (in vitro): enzyme solution (cellulase), cellulose
Exposure: 50 Hz, magnetic field, low frequency field, 50/60 Hz (AC)

* Investigation of a weak magnetic field effect on the in vitro catalytic activity of adenosine deaminase and xanthine oxidase. med./biol.
Batcioglu K, Dogan M, Uyumlu AB, Satilmis B, Bayri N, Atalay S, Demirtas H (2011), Gen Physiol Biophys 30 (4): 410 - 414
Exposure: 50 Hz, magnetic field, low frequency field, 50/60 Hz (AC)

* Induction of alkaline phosphatase activity by exposure of human cell lines to a low-frequency electric field from apparatuses used in clinical therapies. med./biol.
Bisceglia B, Zirpoli H, Caputo M, Chiadini F, Scaglione A, Tecce MF (2011), Bioelectromagnetics 32 (2): 113 - 119
Exposure: electric field, LF therapeutical/medical device

DETAILS * Kinetic Study on the Effects of Extremely Low Frequency Electromagnetic Field on Catalase, Cytochrome P450 and Inducible Nitric Oxide Synthase in Human HaCaT and THP-1 Cell Lines. med./biol.
Patruno A, Tabrez S, Amerio P, Pesce M, Vianale G, Franceschelli S, Grilli A, Kamal MA, Reale M (2011), CNS Neurol Disord Drug Targets 10 (8): 936 - 944
Aim: To study various kinetic constants of catalase, cytochrome P450 and inducible nitric oxide synthase in response to extremely low frequency magnetic field exposure in two human cell lines.
Endpoints: kinetic constants of catalase, cytochrome P450 and inducible nitric oxide synthase (enzyme activity, increase/decrease in activity, peak time, specific enzyme activity at that particular time)
System: intact cell/cell culture (in vitro): THP-1 cells (human monocytic leukemia cell line) and HaCaT cells (human keratinocytes)
Exposure: 50 Hz, magnetic field, low frequency field, 50/60 Hz (AC)

* Extremely low-frequency electromagnetic fields affect lipid-linked Carbonic anhydrase. med./biol.
Ravera S, Pepe IM, Calzia D, Morelli A, Panfoli I (2011), Electromagn Biol Med 30 (2): 67 - 73
Exposure: electric field, magnetic field, low frequency field

DETAILS * Low intensity microwave radiation as modulator of the L-lactate dehydrogenase activity. med./biol.
Vojisavljevic V, Pirogova E, Cosic I (2011), Med Biol Eng Comput 49 (7): 793 - 799
Aim: To study the effects of non-thermal low level microwave exposure on L-lactate dehydrogenase enzyme activity.
Endpoints: enzyme activity (L-lactate dehydrogenase)
System: isolated bio./chem. substance (in vitro): aqueous enzyme solution (LDH) + reactants NADH (as coenzyme) and pyruvate
Exposure: 400 MHz - 975 MHz, low level microwaves

DETAILS * Radio frequency radiation causes no nonthermal damage in enzymes and living cells. med./biol.
Fortune JA, Wu BI, Klibanov AM (2010), Biotechnol Prog 26 (6): 1772 - 1776
Aim: To study whether continuous radiofrequency exposure nonthermally affects commercially important enzymes and live bacterial and human cells.
Endpoints: cell viability/cell division/proliferation (cell viability); enzyme activities
System: isolated bio./chem. substance (in vitro), intact cell/cell culture (in vitro), bacterium (in vitro): enzymes (horseradish peroxidase, beta-galactosidase) in aqueous solution: Escherichia coli, Staphylococcus aureus and TK6 cells (lymphoblastoma cells)
Exposure: 13.56 MHz - 2.45 GHz, radio frequency field, microwaves, CW (continuous wave), 2.45 GHz

* Activity of an enzyme immobilized on superparamagnetic particles in a rotational magnetic field. med./biol.
Mizuki T, Watanabe N, Nagaoka Y, Fukushima T, Morimoto H, Usami R, Maekawa T (2010), Biochem Biophys Res Commun 393 (4): 779 - 782
Exposure: magnetic field, low frequency field

DETAILS * Influence of an Extremely Low Frequency Magnetic Field (ELF-EMF) on Antioxidative Vitamin E Properties in AT478 Murine Squamous Cell Carcinoma Culture In Vitro. med./biol.
Polaniak R, Buldak RJ, Karon M, Birkner K, Kukla M, Zwirska-Korczala K, Birkner E (2010), Int J Toxicol 29 (2): 221 - 230
Aim: To study the effects of extremely low frequency electromagnetic fields and antioxidant supplementation (vitamin E), alone or in combination, on antioxidant enzyme activities and level of lipid peroxidation in a carcinoma cell line in vitro.
Endpoints: cell function (antioxidant enzyme activity and lipid peroxidation)
System: intact cell/cell culture (in vitro): AT478 (murine squamous cell carcinoma cells)
Exposure: 3 Hz - 3 kHz, magnetic field, low frequency field

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